/*
 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.itsaky.androidide.plugins.properties;

import com.itsaky.androidide.plugins.properties.gen.ClassGenerator;
import com.itsaky.androidide.plugins.properties.parser.MessageFile;
import java.io.File;
import java.io.PrintStream;
import java.util.Map;
import java.util.TreeMap;

/**
 * Translates a .properties file into a .java file containing an enum-like Java class which defines
 * static factory methods for all resource keys in a given resource file. <P>
 * <p>
 * Usage: java PropertiesParser -compile [path to .properties file] [output folder where .java file
 * will be written]
 *
 * @author mcimadamore
 */

public class PropertiesParser {

  public Logger logger;

  public PropertiesParser(Logger logger) {
    this.logger = logger;
  }

  public static void main(String[] args) {
    boolean ok = run(args, System.out);
    if (!ok) {
      System.exit(1);
    }
  }

  public static boolean run(String[] args, PrintStream out) {
    PropertiesParser pp = new PropertiesParser(out::println);
    return pp.run(args);
  }

  public void info(String msg) {
    logger.info(msg);
  }

  public boolean run(String[] args) {
    Map<String, String> optionsMap = parseOptions(args);
    if (optionsMap.isEmpty()) {
      usage();
      return false;
    }
    try {
      optionsMap.forEach(this::compilePropertyFile);
      return true;
    } catch (RuntimeException ex) {
      ex.printStackTrace();
      return false;
    }
  }

  private void compilePropertyFile(String propertyPath, String outPath) {
    try {
      File propertyFile = new File(propertyPath);
      String prefix = propertyFile.getName().split("\\.")[0];
      MessageFile messageFile = new MessageFile(propertyFile, prefix);
      new ClassGenerator().generateFactory(messageFile, new File(outPath));
    } catch (Throwable ex) {
      throw new RuntimeException(ex);
    }
  }

  private Map<String, String> parseOptions(String[] args) {
    /* Use TreeMap to guarantee stable forEach iteration */
    Map<String, String> optionsMap = new TreeMap<>();
    for (int i = 0; i < args.length; i++) {
      if ("-compile".equals(args[i]) && i + 2 < args.length) {
        optionsMap.put(args[++i], args[++i]);
      } else {
        return new TreeMap<>();
      }
    }
    return optionsMap;
  }

  private void usage() {
    info("usage:");
    info("    java PropertiesParser {-compile path_to_properties_file path_to_java_output_dir}");
    info("");
    info("Example:");
    info("    java PropertiesParser -compile resources/test.properties resources");
  }

  public interface Logger {

    void info(String msg);
  }
}
